Phantom 4 Advanced incoherent flying

David Kohout

Hello, I bought elite version of hobbyist plan to try mapping with my Phantom 4A. However it seems like it cant fly a straight line alongside its scheduled path. Looks like its "drunk". Same mission works fine with Air 2S. Issue persists even after IMU and compass calibration. Emulating the same mission in Pix4D capture with Phantom 4A works completely fine aswell. Therefore it must be a bug using Phantom 4A with Dronelink. Help me please!

https://app.dronelink.com/david-kohout/my-first-project/plan/1MLwy6lT2RgtSBaBBysa/6zbGzqAvwkSRTHAc5igj


app version: 4.8.3(280) kernel 4.8.1

iOS version: 17.1.2

latest Phantom 4A firmware

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Comments

12 comments

  • Comment author
    Mike (Arizona Wyldwest) Dronelink Expert Dronelink Expert
    • Edited

    It says it’s supported so kinda strange since it works with the other drone.

    https://support.dronelink.com/hc/en-us/articles/16733591191571

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  • Comment author
    Jim McAndrew Dronelink Staff

    Drunk-drone is an issue we have seen happen to older DJI drones over the years when using virtual stick. As you have seen compared to your Air2S, it is an issue with the hardware and not Dronelink. The reason why Pix4D probably works is because it uses onboard waypoints, which you can also do in Dronelink if you prefer: https://support.dronelink.com/hc/en-us/articles/4410621290387-Onboard-Waypoints-Converting-and-Running-Missions

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  • Comment author
    David Kohout

    Thanks Jim, will try that!

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  • Comment author
    Luko
    • Edited

    Hi, I purchased a P4P and I also saw that the photo interval is not perfect.
    Also tried with the WAYPOINT system as written but it doesn't improve much from the tests I tried.
    In the photo below I show flight, 100m altitude and 36kmh (10m/s) speed, 30 hectares, 300 photo, 75%/70%. 
    Do you think speed could be a problem?
    I'm waiting for advice, thanks.

    I also have an Air 2 which is perfect with Dronelink.
    but for large surfaces I would like to use P4P.
    I have to do 300 hectares (10x30).

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  • Comment author
    Mike (Arizona Wyldwest) Dronelink Expert Dronelink Expert
    • Edited

    Can you Share your plan. It could just be the same issue as stated above. 

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  • Comment author
    Luko

    How do I share? file or share from Dronelink?

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  • Comment author
    Luko
    • Edited

    edit

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  • Comment author
    Mike (Arizona Wyldwest) Dronelink Expert Dronelink Expert
    • Edited

    Plans seems fine so more than likely it is the same issue as stated above. Not much DL can do. Also I don’t believe that drone can’t shoot 1 second intervals. When using DL the camera functions the same as when using the DJI app because the firmware will only allow what it is capable of. Most common interval times are 2, 3, 5, 7 and so on. I’d check the DJI specs for your drone and see what they are. If it is set to 1 second the mission may still run but it will capture at whatever interval time was last used. 

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  • Comment author
    Luko

    with lower speeds could it improve? I also tried the DJI GSP app, but it seems to have the same problem.            

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  • Comment author
    David Kohout

    Try manually setting shutter speed to 1/1000 or 1/500 depending on light conditions.

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  • Comment author
    Luko

    I don't know how the shutter can help me with the location of the photos.
    I found the DJI app for P4RTK and it also works well for P4P, it's free and the photos are taken at the right distance. At the moment the P4 family is the best solution for photogrammetry Without buying an Enterprise model with mechanical shutter and 20m pixels of sensor.

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  • Comment author
    David Kohout

    Sorry, wrong thread.

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